Heyl & Patterson

Heyl & Patterson is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Electric Equipment & Systems
• Hardware
• Testing Laboratories

North American Industry Classification System (NAICS) Categories:

• Electrical Apparatus And Equipment, Wiring Supplies, And Related Equipment Merchant Wholesalers
• Hardware Stores
• Testing Laboratories

Standard Industry Classification (SIC) Categories:

• Electrical Apparatus & Equipment
• Hardware
• Testing Laboratories